CN114101917A

CN114101917A - Laser engraving method

Info

Publication number: CN114101917A
Application number: CN202010871642.4A
Authority: CN
Inventors: 邓小洪; 崔峰
Original assignee: Fusheng Precision Co Ltd
Current assignee: Fusheng Precision Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2022-03-01

Abstract

The invention provides a laser engraving method, which is used for solving the problem that the existing manual operation needs to consume a large amount of time and labor cost. The method comprises the following steps: the method comprises the steps of capturing a characteristic part on a semi-finished product to be processed, positioning an engraving path according to the characteristic part, and engraving the semi-finished product to be processed by a laser device according to the engraving path. According to the laser engraving method, after the characteristic part of the semi-finished product to be machined is captured, the engraving path can be positioned through the characteristic part so as to engrave the semi-finished product to be machined, the labor cost can be reduced, and the effect of improving the machining efficiency is achieved.

Description

Laser engraving method

Technical Field

The present invention relates to a laser engraving method, and more particularly, to a laser engraving method capable of automatically identifying positions.

Background

Laser engraving uses laser to ablate the surface of an article to form a predetermined pattern or text on the surface of the article, such as a brand, model or design line on a golf club head. Generally, when laser engraving is performed, the laser irradiation position is manually positioned, and especially when a large number of products are engraved, a lot of time and labor cost are consumed.

Accordingly, there is still a need for improvement of the conventional laser engraving method.

Disclosure of Invention

To solve the above problems, the present invention provides a laser engraving method, which can save labor.

All directions or similar expressions such as "front", "back", "left", "right", "top", "bottom", "inner", "outer", "side", etc. are mainly referred to the directions of the drawings, and are only used for assisting the description and understanding of the embodiments of the present invention, and are not used to limit the present invention.

The use of the terms a or an for the elements and components described throughout this disclosure are for convenience only and provide a general sense of the scope of the invention; in the present invention, it is to be understood that one or at least one is included, and a single concept also includes a plurality unless it is obvious that other meanings are included.

The terms "combined", "combined" and "assembled" as used herein include the separation of components without damaging the components after connection, and the inseparability of components after connection, which can be selected by those skilled in the art according to the material and assembly requirements of the components to be connected.

The laser engraving method of the present invention comprises: providing a sample plate, wherein the sample plate is a relative position between a characteristic part on a semi-finished product to be processed and the initial position of an engraving path in advance; capturing the characteristic part on the semi-finished product to be processed in the laser engraving operation, and comparing the actual position of the characteristic part in the laser engraving operation with the position of the characteristic part in the sample plate to obtain an offset value; positioning the actual position of the feature in the laser engraving operation to the position of the feature in the template and then positioning the engraving path according to the offset value; and engraving the semi-finished product to be processed by a laser device according to the engraving path.

Therefore, the laser engraving method of the invention can position the engraving path from the characteristic part after picking up the characteristic part of the semi-finished product to be processed so as to engrave the semi-finished product to be processed, thereby reducing the labor cost and realizing the effect of improving the processing efficiency.

Wherein the characteristic part is a number, a pattern or a symbol. Thus, the pattern formed by painting with the pigment can be identified.

Wherein, the semi-finished product to be processed is a golf club head semi-finished product, and the characteristic part is a linear groove, a convex rib or the center of a pipe handle. Thus, the method has the effect of identifying the undulation structure on the surface of the golf club head semi-finished product.

Wherein the engraving is performed with a laser power of 2-50W. Thus, the laser processing device can prevent the laser power from being too high to damage the semi-finished product to be processed.

Wherein the laser power of 20-30W is used to perform the engraving. Therefore, the laser engraving machine can perform engraving with the most suitable laser power and improve the engraving quality.

Wherein, the carving depth is 0.05-0.2 mm, and the carving width is 0.05-0.3 mm. Thus, the effect of maintaining the engraving quality is obtained.

And correcting the position of the semi-finished product to be processed on the Z-axis coordinate, so that the offset between the actual position of the semi-finished product 1 to be processed and the reference point of the sample plate on the Z-axis coordinate is less than or equal to 1.5 mm. Therefore, the laser device can be prevented from generating excessively severe laser intensity change along with the fluctuation of the contour of the processing surface of the semi-finished product to be processed, and the effect of maintaining the engraving quality is achieved.

Drawings

FIG. 1: a schematic view of a processing surface according to a preferred embodiment of the present invention;

FIG. 2: an operation diagram of a preferred embodiment of the present invention is shown.

Description of the reference numerals

1, semi-finished product to be processed

1a processing surface

11 characteristic part

L-shaped laser device

R is a mechanical arm.

Detailed Description

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below:

the laser engraving method of the present invention comprises: the method comprises the steps of capturing a characteristic part 11 on a semi-finished product 1 to be processed, positioning an engraving path according to the characteristic part 11, and engraving the semi-finished product to be processed according to the engraving path.

Referring to fig. 1, the semi-finished product 1 to be processed may be made of metal or wood, and the semi-finished product to be processed may have any geometric shape, but the present invention is not limited thereto, and the semi-finished product 1 to be processed may preferably have a processing surface 1a, in this embodiment, a golf club head semi-finished product is taken as an example, and in detail, one surface of the golf club head semi-finished product has the feature 11, for example, the feature 11 may be a pre-marked number, pattern or symbol, for example, the feature 11 may be painted by paint coating or the like to form the feature 11, or the feature 11 may be a molding such as a groove, a groove or a protruding rib formed by forging, casting or die casting or the like to be pre-molded on the surface of the golf club head semi-finished product, and the feature 11 may also be a conventional structure of the golf club head semi-finished product itself, such as the center of the shaft of the golf ball blank, the invention is not limited.

The processing surface 1a of the semi-finished product 1 to be processed is captured to obtain the image of the feature 11 on the processing surface 1a, for example, the image can be captured by a capturing device, which may be a CCD image lens or the like, to capture the image of the processing surface 1a, so that the feature 11 of the number, pattern or symbol on the processing surface 1a can be captured, or the capturing device may be a scanning lens, so that the contour on the processing surface 1a can be scanned, and the feature 11 of the groove, groove or protruding rib on the processing surface 1a can be captured. And recording the capturing result of the processing surface 1a of the to-be-processed semi-finished product 1 in an arithmetic unit, which can be a computer, or a device with an arithmetic processing function, and the invention is not limited.

As shown in fig. 1 and fig. 2, after obtaining the feature of the to-be-processed semi-finished product 1, the engraving path is located according to the feature 11, specifically, the engraving path has a starting position, so as to start engraving from the starting position according to a preset engraving path by a laser device L, and the laser device L may have a structure of an existing laser emitter, and the like, which is not described herein again. The relative position between the starting position and the feature 11 can be preset, for example, the starting position pair can be set to be located at the feature 11, so that the starting position of the engraving path can be known from the feature 11 of the to-be-processed semi-finished product 1, or the starting position can be set to be located at a certain distance and orientation from the feature 11, so that the starting position of the engraving path can be known from the feature 11 of the to-be-processed semi-finished product 1, which is not limited by the invention.

In this embodiment, the relative position between the feature 11 and the start position of the engraving path is stored in the computing unit as a template, so as to improve the positioning efficiency of the start position of the engraving path. In detail, for example, the template may be stored in the computing unit in an image manner, the capturing device may identify the feature 11 of the to-be-processed semi-finished product 1 to obtain an offset value between the actual position of the feature 11 of the to-be-processed semi-finished product 1 and the feature position of the template in the image, and adjust the relative position between the to-be-processed semi-finished product 1 and the laser device L according to the offset value, for example, the laser device L may be set to position the initial position according to the position of the feature 11 in the template, so the position of the to-be-processed semi-finished product 1 may be adjusted to align the feature 11 of the to-be-processed semi-finished product 1 or completely coincide with the feature of the template in the computing unit, thereby ensuring that the laser device L can perform engraving at the correct position. In this embodiment, the laser power of 2-50W can be used for engraving, preferably 20-30W, so as to maintain the engraving depth of 0.05-0.2 mm and the engraving width of 0.05-0.3 mm, thereby avoiding the damage to the semi-finished product 1 to be processed due to the excessive laser power.

It should be noted that, in addition, the vertical distance between the to-be-processed semi-finished product 1 and the laser device L can be calibrated, so that the laser device L can maintain a predetermined distance when engraving the to-be-processed semi-finished product 1, for example, the template can include a position of the to-be-processed semi-finished product 1 recorded in a three-dimensional coordinate as a reference point in advance, and is stored in the computing device, at this time, a predetermined vertical distance exists between the laser device L and the to-be-processed semi-finished product 1 on the reference point, when engraving the to-be-processed semi-finished product 1, the actual position of the to-be-processed semi-finished product 1 in the three-dimensional coordinate can be captured by a recording device such as a side lens, and is transmitted to the computing device for calibration, in detail, the actual position of the to-be-processed semi-finished product 1 in the three-dimensional coordinate can be adjusted, so that the actual position of the semi-finished product 1 to be processed on the three-dimensional coordinate is aligned to the reference point of the template in the operation unit on the Z-axis coordinate, thereby ensuring that the semi-finished product 1 to be processed has the predetermined vertical distance with the laser device L. Therefore, the situation that the laser intensity is insufficient due to the overlarge vertical distance between the to-be-processed semi-finished product 1 and the laser device L or the situation that the engraving quality is poor due to the overlarge laser intensity due to the overlarge vertical distance can be avoided. Preferably, the position of the to-be-processed semi-finished product 1 on the Z-axis coordinate may be corrected, so that the offset between the actual position of the to-be-processed semi-finished product 1 and the reference point of the template on the Z-axis coordinate is less than or equal to 1.5 mm.

In addition, in this embodiment, the to-be-processed semi-finished product 1 may be transported by a robot arm R, or the relative position between the to-be-processed semi-finished product 1 and the laser device L may be controlled, so that an operator may automatically control the robot arm R to clamp the to-be-processed semi-finished product 1 according to a program set by a central processing system, for example, the robot arm R may be a six-axis robot arm, so that the robot arm R may reach any position and angle in a three-dimensional space, so as to transport the to-be-processed semi-finished product 1 to move at any position, and further improve the engraving accuracy and the operation efficiency.

In summary, in the laser engraving method of the present invention, after the feature of the to-be-processed semi-finished product is captured, the engraving path can be located by the feature to engrave the to-be-processed semi-finished product, so as to reduce the labor cost and improve the processing efficiency.

Claims

1. A method of laser engraving, comprising:

providing a sample plate, wherein the sample plate is a relative position between a characteristic part on a semi-finished product to be processed and the initial position of an engraving path in advance;

capturing the characteristic part on the semi-finished product to be processed in the laser engraving operation, and comparing the actual position of the characteristic part in the laser engraving operation with the position of the characteristic part in the sample plate to obtain an offset value;

positioning the actual position of the feature in the laser engraving operation to the position of the feature in the template and then positioning the engraving path according to the offset value; and

and engraving the semi-finished product to be processed by a laser device according to the engraving path.

2. The laser engraving method of claim 1, wherein the feature is a number, a pattern or a symbol.

3. The laser engraving method of claim 1, wherein the semi-finished product to be processed is a golf club head semi-finished product, and the feature is a groove, a raised rib or a stem center.

4. The laser engraving method of claim 1, wherein the engraving is performed with a laser power of 2-50W.

5. The laser engraving method of claim 4, wherein the engraving is performed with a laser power of 20-30W.

6. The laser engraving method of claim 1, wherein the engraving depth is 0.05 to 0.2mm and the engraving width is 0.05 to 0.3 mm.

7. The laser engraving method of any one of claims 1 to 6, wherein the position of the to-be-machined semi-finished product on the Z-axis coordinate is corrected such that the deviation between the actual position of the to-be-machined semi-finished product 1 and the reference point of the template on the Z-axis coordinate is less than or equal to 1.5 mm.